Hi @jej03, welcome to the Community Forum!
This is a great question. From the outset, I’ll say that it’s often better to just wait until an ISSN has been assigned to a journal before you begin registering DOIs for it. You can always go back and retroactively register DOIs for already-published articles once the ISSN has been assigned, and this will help you avoid needing to do the steps I’ll describe below to resubmit your metadata if you do register DOIs for articles in a journal without an ISSN and subsequently acquire an ISSN.
Also, this may be more or less difficult depending on which method you plan to use to register DOIs. For example, if you’re hosting your articles via OJS, you won’t be able to register any DOIs via the built-in OJS deposit tools before an ISSN is assigned. You can still register those DOIs via our Web Deposit Form and incorporate them into your OJS platform, but OJS isn’t able to submit the metadata for those DOIs to Crossref automatically until you’ve been assigned an ISSN. However, if you do proceed in this fashion (registering DOIs via the Web Deposit Form, incorporating them into OJS, then acquiring an ISSN), you will be able to immediately repush metadata deposits for all of your DOIs via the built-in OJS Crossref integration once you’ve added your ISSN into your OJS installation. This will update the metadata for all of your DOIs for this journal to reflect the newly acquired ISSN!
If you aren’t using OJS, the steps you’ll want to follow will be these:
First, you’ll want to start by registering any DOIs in your ISSN-less journal via the Web Deposit Form by choosing/assigning a journal-level DOI. This is shown in the first image in my 14 November 2024 post above. For the sake of example and simplicity, let’s continue to say your journal-level DOI is 10.5555/abcd1234. Make sure to include your exact journal-level DOI in every deposit you make by entering it on that first page of the Web Deposit Form. Note that the string of the journal-level DOI does not need to appear within the string of your article DOIs; that is, if 10.5555/abcd1234 is your journal-level DOI, your article DOIs do not need to take the form 10.5555/abcd1234/xyz456 but can instead be 10.5555/xyz456.
Down the line, whenever you’re assigned an ISSN or set of ISSNs, you will first need to go to the Web Deposit Form and enter your journal details: title, abbreviation, the journal-level DOI you have been using (10.5555/abcd1234) and the new ISSN(s). Do not enter volume/issue information or any dates. Instead, click Submit Journal/Issue DOI. This will add your ISSN to the top-level title record associated with your journal, but will not retroactively update the metadata for your existing DOIs to include the ISSNs. You will need to do one more step for that.
You could, in theory, just manually resubmit metadata for all of your DOIs via the Web Deposit Form in order to update their ISSNs. To do this, you would need to reenter all the previously submitted metadata for each DOI. Unfortunately, there is no manual way to do this in bulk as there is for e.g., resolution URLs. This sounds tedious and I would not wish it on anyone!
Instead, you can now move over to our new Metadata Manager which has the ability to retrieve submitted metadata for a DOI you have already registered. Log in and click Edit Record. Now, you should be able to enter an existing DOI, click Edit, click Next to arrive at the Journal screen and enter the ISSN(s). Click Next twice more then Submit and the DOI metadata will now be updated with the newly assigned ISSN(s). This process is still a bit manual but much, much less so than doing the same work via the Web Deposit Form.
I hope this is useful. If you have any other questions about this please let us know!